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Jalili-Jahani N, Rabbani F, Fatehi A, Musavi Haghighi T. Rapid one-pot synthesis of Ag-decorated ZnO nanoflowers for photocatalytic degradation of tetracycline and product analysis by LC/APCI-MS and direct probe ESI-MS. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.06.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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102
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Jiang BC, Yang SH. Nickel-Doped ZnO Nanowalls with Enhanced Electron Transport Ability for Electrochemical Water Splitting. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1980. [PMID: 34443811 PMCID: PMC8398548 DOI: 10.3390/nano11081980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 07/29/2021] [Accepted: 07/29/2021] [Indexed: 11/29/2022]
Abstract
This article reports on the growth of 3 mol% nickel (Ni)-doped zinc oxide nanowalls (ZnO NWLs) using the hydrothermal method. Morphological investigation as well as electrical conductivity of the undoped and Ni-doped ZnO NWLs was also discussed. The surface roughness of the formed ZnO NWLs was reduced after Ni-doping. The pore size of Ni-doped ZnO NWLs can be controlled by changing the concentration of hexamethylenetetramine (HMT). As the HMT concentration increased, the pores became larger with increasing surface roughness. The electrical conductivity of the electron-only device based on the Ni-doped ZnO NWLs was higher than that of the undoped one, and it was decreased with increasing the HMT concentration. Our results reveal that Ni-doping and adjustment of the HMT concentration are two key approaches to tune the morphology and electrical properties of ZnO NWLs. Finally, the undoped and Ni-doped ZnO NWLs were used as the catalyst for electrochemical water splitting. The Ni-doped ZnO NWLs with the HMT concentration of 1 mM showed the highest electrochemical performance, which can be attributed to the increased surface area and electrical conductivity.
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Affiliation(s)
| | - Sheng-Hsiung Yang
- Institute of Lighting and Energy Photonics, College of Photonics, National Yang Ming Chiao Tung University, Tainan 71150, Taiwan;
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103
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UV-Responsive Screen-Printed Porous ZnO Nanostructures on Office Paper for Sustainable and Foldable Electronics. CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9080192] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The fabrication of low-cost, flexible, and recyclable electronic devices has been the focus of many research groups, particularly for integration in wearable technology and the Internet of Things (IoT). In this work, porous zinc oxide (ZnO) nanostructures are incorporated as a UV sensing material into the composition of a sustainable water-based screen-printable ink composed of carboxymethyl cellulose (CMC). The formulated ink is used to fabricate flexible and foldable UV sensors on ubiquitous office paper. The screen-printed CMC/ZnO UV sensors operate under low voltage (≤2 V) and reveal a stable response over several on/off cycles of UV light exposure. The devices reach a response current of 1.34 ± 0.15 mA and a rise and fall time of 8.2 ± 1.0 and 22.0 ± 2.3 s, respectively. The responsivity of the sensor is 432 ± 48 mA W−1, which is the highest value reported in the literature for ZnO-based UV sensors on paper substrates. The UV-responsive devices display impressive mechanical endurance under folding, showing a decrease in responsivity of only 21% after being folded 1000 times. Their low-voltage operation and extreme folding stability indicate a bright future for low-cost and sustainable flexible electronics, showing potential for low-power wearable applications and smart packaging.
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104
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Controlled Fabrication of Quality ZnO NWs/CNTs and ZnO NWs/Gr Heterostructures via Direct Two-Step CVD Method. NANOMATERIALS 2021; 11:nano11071836. [PMID: 34361224 PMCID: PMC8308266 DOI: 10.3390/nano11071836] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/09/2021] [Accepted: 07/09/2021] [Indexed: 01/28/2023]
Abstract
A novel and advanced approach of growing zinc oxide nanowires (ZnO NWs) directly on single-walled carbon nanotubes (SWCNTs) and graphene (Gr) surfaces has been demonstrated through the successful formation of 1D–1D and 1D–2D heterostructure interfaces. The direct two-step chemical vapor deposition (CVD) method was utilized to ensure high-quality materials’ synthesis and scalable production of different architectures. Iron-based universal compound molecular ink was used as a catalyst in both processes (a) to form a monolayer of horizontally defined networks of SWCNTs interfaced with vertically oriented ZnO NWs and (b) to grow densely packed ZnO NWs directly on a graphene surface. We show here that our universal compound molecular ink is efficient and selective in the direct synthesis of ZnO NWs/CNTs and ZnO NWs/Gr heterostructures. Heterostructures were also selectively patterned through different fabrication techniques and grown in predefined locations, demonstrating an ability to control materials’ placement and morphology. Several characterization tools were employed to interrogate the prepared heterostructures. ZnO NWs were shown to grow uniformly over the network of SWCNTs, and much denser packed vertically oriented ZnO NWs were produced on graphene thin films. Such heterostructures can be used widely in many potential applications, such as photocatalysts, supercapacitors, solar cells, piezoelectric or thermal actuators, as well as chemical or biological sensors.
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105
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Javed A, Wiener J, Tamulevičienė A, Tamulevičius T, Lazauskas A, Saskova J, Račkauskas S. One Step In-Situ Synthesis of Zinc Oxide Nanoparticles for Multifunctional Cotton Fabrics. MATERIALS 2021; 14:ma14143956. [PMID: 34300877 PMCID: PMC8304503 DOI: 10.3390/ma14143956] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 07/06/2021] [Accepted: 07/11/2021] [Indexed: 11/30/2022]
Abstract
Zinc oxide nanoparticles (ZnO NPs) have acquired great significance in the textile sector due to their impressive efficiency and multifold utilization, such as antimicrobials, UV protection, photo catalytic activity, and self-cleaning. The aim of this work is in-situ growth of ZnO NPs on 100% cotton fabrics with the one-step hydrothermal method for preparation of multifunctional textile with UV protecting, antibacterial, and photo catalytic properties. Sodium hydroxide (NaOH) and Zinc nitrate hexahydrate [Zn(NO3)2·6H2O] were used as reactants for the growth of zinc oxide on the 100% cotton fabrics. The loaded amount of Zn contents on the cotton fabric was determined by using induced coupled plasma atomic emission spectroscopy (ICP-AES). The surface morphological characterization of deposited ZnO NPs was examined, employing scanning electron microscopy (SEM), X-ray powder diffraction (XRD) and, Fourier- transform infrared spectroscopy (FTIR). The characterization results showed the presence of ZnO NPs on cotton fabrics having hexagonal wurtzite crystalline structure. The synthesized ZnO NPs on fabrics exhibited promising results for antibacterial, UV protection, and photo catalytic performance.
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Affiliation(s)
- Asif Javed
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, 46001 Liberec, Czech Republic; (J.W.); (J.S.)
- Correspondence:
| | - Jakub Wiener
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, 46001 Liberec, Czech Republic; (J.W.); (J.S.)
| | - Asta Tamulevičienė
- Institute of Materials Science, Kaunas University of Technology, K. Baršausko St. 59, LT-51423 Kaunas, Lithuania; (A.T.); (T.T.); (A.L.); (S.R.)
- Department of Physics, Kaunas University of Technology, Studentų St. 50, LT-51423 Kaunas, Lithuania
| | - Tomas Tamulevičius
- Institute of Materials Science, Kaunas University of Technology, K. Baršausko St. 59, LT-51423 Kaunas, Lithuania; (A.T.); (T.T.); (A.L.); (S.R.)
- Department of Physics, Kaunas University of Technology, Studentų St. 50, LT-51423 Kaunas, Lithuania
| | - Algirdas Lazauskas
- Institute of Materials Science, Kaunas University of Technology, K. Baršausko St. 59, LT-51423 Kaunas, Lithuania; (A.T.); (T.T.); (A.L.); (S.R.)
| | - Jana Saskova
- Department of Material Engineering, Faculty of Textile Engineering, Technical University of Liberec, 46001 Liberec, Czech Republic; (J.W.); (J.S.)
| | - Simas Račkauskas
- Institute of Materials Science, Kaunas University of Technology, K. Baršausko St. 59, LT-51423 Kaunas, Lithuania; (A.T.); (T.T.); (A.L.); (S.R.)
- Department of Physics, Kaunas University of Technology, Studentų St. 50, LT-51423 Kaunas, Lithuania
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106
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ZnO Films Incorporation Study on Macroporous Silicon Structure. MATERIALS 2021; 14:ma14133697. [PMID: 34279267 PMCID: PMC8269899 DOI: 10.3390/ma14133697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/24/2021] [Accepted: 06/25/2021] [Indexed: 12/02/2022]
Abstract
In the present work, we developed hybrid nanostructures based on ZnO films deposited on macroporous silicon substrates using the sol–gel spin coating and ultrasonic spray pyrolysis (USP) techniques. The changes in the growth of ZnO films on macroporous silicon were studied using a UV-visible spectrometer, an X-ray diffractometer (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). XRD analysis revealed the beneficial influence of macroporous silicon on the structural properties of ZnO films. SEM micrographs showed the growth and coverage of ZnO granular and flake-like crystals inside the pores of the substrate. The root mean square roughness (RMS) measured by AFM in the ZnO grown on the macroporous silicon substrate was up to one order of magnitude higher than reference samples. These results prove that the methods used in this work are effective to cover porous and obtain nano-morphologies of ZnO. These morphologies could be useful for making highly sensitive gas sensors.
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107
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Tortella G, Rubilar O, Fincheira P, Pieretti JC, Duran P, Lourenço IM, Seabra AB. Bactericidal and Virucidal Activities of Biogenic Metal-Based Nanoparticles: Advances and Perspectives. Antibiotics (Basel) 2021; 10:783. [PMID: 34203129 PMCID: PMC8300690 DOI: 10.3390/antibiotics10070783] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/17/2021] [Accepted: 06/19/2021] [Indexed: 12/14/2022] Open
Abstract
Much progress has been achieved in the preparation and application of engineered nanoparticles (NPs) in the field of medicine, mainly for antibacterial and antiviral applications. In the war against bacteria and viruses, besides traditional antibiotics and antiviral drugs, metal-based nanoparticles, such as silver (AgNPs), copper (CuNPs), copper oxides (CuO-NPs), iron oxide (FeO-NPs), zinc oxide (ZnO-NPs), and titanium oxide (TiO2-NPs) have been used as potent antimicrobial agents. These nanoparticles can be synthesized by traditional methods, such as chemical and physical routes, or more recently by biogenic processes. A great variety of macro and microorganisms can be successfully used as reducing agents of metal salt precursors in the biogenic synthesis of metal-based NPs for antimicrobial activity. Depending on the nature of the biological agent, NPs with different sizes, aggregation states, morphology, surface coatings and charges can be obtained, leading to different antimicrobial effects. Considering the drug resistance to traditional therapies, the development of versatile nanomaterials with potent antimicrobial effects is under intensive investigation. In this sense, this review presents and discusses the recent progress in the preparation and application of metal-based nanoparticles biogenically synthesized for antibacterial and antivirus applications. The strength and limitations are critically discussed.
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Affiliation(s)
- Gonzalo Tortella
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco 4811230, Chile; (O.R.); (P.F.)
- Departamento de Ingeniería Química, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco 4811230, Chile
| | - Olga Rubilar
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco 4811230, Chile; (O.R.); (P.F.)
- Departamento de Ingeniería Química, Universidad de La Frontera, Av. Francisco Salazar 01145, Casilla 54-D, Temuco 4811230, Chile
| | - Paola Fincheira
- Centro de Excelencia en Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Av. Francisco Salazar 01145, Temuco 4811230, Chile; (O.R.); (P.F.)
| | - Joana C. Pieretti
- Center for Natural and Human Sciences, Universidade Federal do ABC, Santo André 09210-580, Brazil; (J.C.P.); (I.M.L.); (A.B.S.)
| | - Paola Duran
- Biocontrol Research Laboratory, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile;
| | - Isabella M. Lourenço
- Center for Natural and Human Sciences, Universidade Federal do ABC, Santo André 09210-580, Brazil; (J.C.P.); (I.M.L.); (A.B.S.)
| | - Amedea B. Seabra
- Center for Natural and Human Sciences, Universidade Federal do ABC, Santo André 09210-580, Brazil; (J.C.P.); (I.M.L.); (A.B.S.)
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108
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Mohamed F, Enaiet Allah A, Abu Al-Ola KA, Shaban M. Design and Characterization of a Novel ZnO-Ag/Polypyrrole Core-Shell Nanocomposite for Water Bioremediation. NANOMATERIALS 2021; 11:nano11071688. [PMID: 34203125 PMCID: PMC8308129 DOI: 10.3390/nano11071688] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 05/22/2021] [Accepted: 05/24/2021] [Indexed: 12/17/2022]
Abstract
Incorporating nanostructured metal and metal oxide in a polymer matrix is a strategic way to develop a novel candidate for water bioremediation. In this study, under microwave irradiation, a ZnO–Ag/polypyrrole (PPy) nanocomposite with a core/shell structure was prepared by interfacial polymerization of pyrrole in the presence of ZnO nanoparticles and AgNO3 as an oxidant. The antimicrobial behavior of the ZnO–Ag core combined with the electrical properties of the conducting PPy shell created a special ZnO–Ag/PPy nanocomposite with inherent adsorption behavior and antimicrobial properties. More impressively, the as-prepared ZnO–Ag/PPy displayed enhanced adsorption of Cd2+ and PO43− ions in the mixed solution. At pH 8, it had overall removal efficiencies of 95% and 75% for Cd2+and PO43− ions, respectively. The Freundlich adsorption model, rather than the Langmuir adsorption model, better fits the adsorption isotherm results. The adsorption kinetics also followed the pseudo-second-order kinetic model. Additionally, the engineered nanocomposite demonstrated antifungal activity against different fungi, as well as remarkable antibacterial activity against Gram-negative and Gram-positive bacteria. The synergistic combination of crystallinity, coherence of the ZnO–Ag core in the PPy matrix, and the negative zeta potential all contribute to this nanocomposite’s high efficiency. Our results have significant consequences in the wastewater bioremediation field using a simple operation process.
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Affiliation(s)
- Fatma Mohamed
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt;
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt;
| | - Abeer Enaiet Allah
- Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt;
| | - Khulood A. Abu Al-Ola
- Department of Chemistry, College of Science, Taibah University, Al-Madinah Al-Munawarah 30002, Saudi Arabia;
| | - Mohamed Shaban
- Nanophotonics and Applications (NPA) Lab, Physics Department, Faculty of Science, Beni-Suef University, Beni-Suef 62514, Egypt;
- Department of Physics, Faculty of Science, Islamic University in Madinah, Al-Madinah Al-Munawarah 42351, Saudi Arabia
- Correspondence:
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109
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Alharthi MN, Ismail I, Bellucci S, Khdary NH, Abdel Salam M. Biosynthesis Microwave-Assisted of Zinc Oxide Nanoparticles with Ziziphus jujuba Leaves Extract: Characterization and Photocatalytic Application. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1682. [PMID: 34206802 PMCID: PMC8307762 DOI: 10.3390/nano11071682] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/15/2021] [Accepted: 06/24/2021] [Indexed: 12/18/2022]
Abstract
The present work is intended to biosynthesize zinc oxide nanoparticles (ZnO NPs) via facile and modern route using aqueous Ziziphus jujuba leaves extract assisted by microwave and explore their photocatalytic degradation of methyl orange anionic dye and methylene blue cationic dye under solar irradiation. The biosynthesized microwave assisted ZnO NPs were characterized and the results showed that ZnO NPs contain hexagonal wurtzite and characterized with a well-defined spherical-like shape with an outstanding band gap (2.70 eV), average particle size of 25 nm and specific surface area of 11.4 m2/g. The photocatalytic degradation of the MO and MB dyes by biosynthesized ZnO NPs under solar irradiation was studied and the results revealed the selective nature of the ZnO NPs for the adsorption and further photocatalytic degradation of the MO dye compared to the MB dye. In addition, the photocatalytic degradation of MO and MB dyes by the ZnO NPs under solar radiation was fitted by the first-order kinetics. Moreover, the photodegradation mechanism proposed that superoxide ions and hydroxyl radicals are the main reactive species.
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Affiliation(s)
- Maymounah N. Alharthi
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia; (M.N.A.); (I.I.)
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Iqbal Ismail
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia; (M.N.A.); (I.I.)
| | - Stefano Bellucci
- National Laboratories of Frascati, National Institute of Nuclear Physics, I-00044 Frascati, Italy;
| | - Nezar H. Khdary
- King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia;
| | - Mohamed Abdel Salam
- Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia; (M.N.A.); (I.I.)
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110
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Islam F, Tahmasebi A, Wang R, Yu J. Structure of Coal-Derived Metal-Supported Few-Layer Graphene Composite Materials Synthesized Using a Microwave-Assisted Catalytic Graphitization Process. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1672. [PMID: 34202042 PMCID: PMC8304115 DOI: 10.3390/nano11071672] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 11/17/2022]
Abstract
Metal-supported few-layer graphene (FLG) was synthesized via microwave-assisted catalytic graphitization owing to the increasing demand for it and its wide applications. In this study, we quickly converted earth-abundant and low-cost bituminous coal to FLG over Fe catalysts at a temperature of 1300 °C. X-ray diffraction, Raman spectroscopy, transmission electron microscopy, and N2 adsorption-desorption experiments were performed to analyze the fabricated metal-supported FLG. The results indicated that the microwave-irradiation temperature at a set holding-time played a critical role in the synthesis of metal-supported FLG. The highest degree of graphitization and a well-developed pore structure were fabricated at 1300 °C using a S10% Fe catalyst for 20 min. High-resolution transmission electron microscopy analysis confirmed that the metal-supported FLG fabricated via microwave-assisted catalytic graphitization consisted of 3-6 layers of graphene nanosheets. In addition, the 2D band at 2700 cm-1 in the Raman spectrum of the fabricated metal-supported FLG samples were observed, which indicated the presence of few-layer graphene structure. Furthermore, a mechanism was proposed for the microwave-assisted catalytic graphitization of bituminous coal. Here, we developed a cost-effective and environmental friendly metal-supported FLG method using a coal-based carbonaceous material.
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Affiliation(s)
- Faridul Islam
- Chemical Engineering, School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia; (F.I.); (A.T.); (R.W.)
| | - Arash Tahmasebi
- Chemical Engineering, School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia; (F.I.); (A.T.); (R.W.)
| | - Rou Wang
- Chemical Engineering, School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia; (F.I.); (A.T.); (R.W.)
| | - Jianglong Yu
- Chemical Engineering, School of Engineering, The University of Newcastle, Callaghan, NSW 2308, Australia; (F.I.); (A.T.); (R.W.)
- Suzhou Industrial Park Monash Research Institute of Science and Technology, Southeast University—Monash University Joint Graduate School, Suzhou 215000, China
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111
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Mirikaram N, Pérez-Molina Á, Morales-Torres S, Salemi A, Maldonado-Hódar FJ, Pastrana-Martínez LM. Photocatalytic Perfomance of ZnO-Graphene Oxide Composites towards the Degradation of Vanillic Acid under Solar Radiation and Visible-LED. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1576. [PMID: 34203965 PMCID: PMC8232730 DOI: 10.3390/nano11061576] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/08/2021] [Accepted: 06/11/2021] [Indexed: 01/08/2023]
Abstract
Graphene oxide (GO) is used to enhance the photocatalytic activity of ZnO nanoparticles for the degradation of vanillic acid (VA) under simulated solar light and visible-LED (λ > 430 nm). ZnO-GO composites are prepared by a mixing and sonication process with different GO loadings (i.e., from 1.8 to 6.5 wt.%). The materials are extensively characterized by thermogravimetric analysis (TGA), physisorption of N2, X-ray diffraction (XRD), infrared spectroscopy (FTIR), scanning electron microscopy (SEM), point of zero charge (pHPZC), and UV-Vis diffuse reflectance spectroscopy (DRUV). The presence of GO increases the photocatalytic activity of all the prepared composites in comparison with the pristine ZnO. The highest photocatalytic activity is found for the composite containing 5.5 wt.% of GO (i.e., ZnO-GO5.5), reaching a VA degradation of 99% and 35% under solar light and visible-LED, respectively. Higher TOC removal/VA degradation ratios are obtained from the experiments carried out under visible-LED, indicating a more effective process for the mineralization of VA than those observed under simulated solar light. The influence of hole, radical, and non-radical scavengers is studied in order to assess the occurrence of the reactive oxygen species (ROS) involved in the photocatalytic mechanism. The study of the photo-stability during three reuse experiments indicates that the presence of GO in the composites reduces the photocorrosion in comparison with pristine ZnO.
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Affiliation(s)
- Neda Mirikaram
- Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, ES-18071 Granada, Spain; (N.M.); (Á.P.-M.); (S.M.-T.); (F.J.M.-H.)
- Environmental Sciences Research Institute, Shahid Beheshti University, Tehran 19839-63113, Iran;
| | - Álvaro Pérez-Molina
- Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, ES-18071 Granada, Spain; (N.M.); (Á.P.-M.); (S.M.-T.); (F.J.M.-H.)
| | - Sergio Morales-Torres
- Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, ES-18071 Granada, Spain; (N.M.); (Á.P.-M.); (S.M.-T.); (F.J.M.-H.)
| | - Amir Salemi
- Environmental Sciences Research Institute, Shahid Beheshti University, Tehran 19839-63113, Iran;
| | - Francisco J. Maldonado-Hódar
- Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, ES-18071 Granada, Spain; (N.M.); (Á.P.-M.); (S.M.-T.); (F.J.M.-H.)
| | - Luisa M. Pastrana-Martínez
- Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Avda. Fuente Nueva s/n, ES-18071 Granada, Spain; (N.M.); (Á.P.-M.); (S.M.-T.); (F.J.M.-H.)
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Khalid A, Ahmad P, Alharthi AI, Muhammad S, Khandaker MU, Faruque MRI, Khan A, Din IU, Alotaibi MA, Alzimami K, Alfuraih AA, Bradley DA. Enhanced Optical and Antibacterial Activity of Hydrothermally Synthesized Cobalt-Doped Zinc Oxide Cylindrical Microcrystals. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3223. [PMID: 34207950 PMCID: PMC8230675 DOI: 10.3390/ma14123223] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 06/04/2021] [Accepted: 06/07/2021] [Indexed: 11/16/2022]
Abstract
Cobalt (Co) doped zinc oxide (ZnO) microcrystals (MCs) are prepared by using the hydrothermal method from the precursor's mixture of zinc chloride (ZnCl2), cobalt-II chloride hexahydrate (CoCl2·6H2O), and potassium hydroxide (KOH). The smooth round cylindrical morphologies of the synthesized microcrystals of Co-doped ZnO show an increase in absorption with the cobalt doping. The antibacterial activity of the as-obtained Co-doped ZnO-MCs was tested against the bacterial strains of gram-negative (Escherichia coli, Klebsiella pneumonia) and gram-positive bacteria (Staphylococcus aureus, Streptococcus pyogenes) via the agar well diffusion method. The zones of inhibition (ZOI) for Co-doped ZnO-MCs against E. coli and K. pneumoniae were found to be 17 and 19 mm, and 15 and 16 mm against S. Aureus and S. pyogenes, respectively. The prepared Co-doped ZnO-MCs were thus established as a probable antibacterial agent against gram-negative bacterial strains.
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Affiliation(s)
- Awais Khalid
- Department of Physics, Hazara University Mansehra, Khyber Pakhtunkhwa 21300, Pakistan;
| | - Pervaiz Ahmad
- Department of Physics, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan
| | - Abdulrahman I. Alharthi
- Department of Chemistry, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia; (A.I.A.); (I.U.D.); (M.A.A.)
| | - Saleh Muhammad
- Department of Physics, Hazara University Mansehra, Khyber Pakhtunkhwa 21300, Pakistan;
| | - Mayeen Uddin Khandaker
- Center for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Selangor, Malaysia; (M.U.K.); (D.A.B.)
| | | | - Abdulhameed Khan
- Department of Biotechnology, University of Azad Jammu and Kashmir, Muzaffarabad 13100, Pakistan;
| | - Israf Ud Din
- Department of Chemistry, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia; (A.I.A.); (I.U.D.); (M.A.A.)
| | - Mshari A. Alotaibi
- Department of Chemistry, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia; (A.I.A.); (I.U.D.); (M.A.A.)
| | - Khalid Alzimami
- Department of Radiological Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia; (K.A.); (A.A.A.)
| | - Abdulrahman A. Alfuraih
- Department of Radiological Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia; (K.A.); (A.A.A.)
| | - David A. Bradley
- Center for Applied Physics and Radiation Technologies, School of Engineering and Technology, Sunway University, Bandar Sunway 47500, Selangor, Malaysia; (M.U.K.); (D.A.B.)
- Department of Physics, University of Surrey, Guilford GU2 7XH, UK
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Garcia AJL, Sico G, Montanino M, Defoor V, Pusty M, Mescot X, Loffredo F, Villani F, Nenna G, Ardila G. Low-Temperature Growth of ZnO Nanowires from Gravure-Printed ZnO Nanoparticle Seed Layers for Flexible Piezoelectric Devices. NANOMATERIALS 2021; 11:nano11061430. [PMID: 34071555 PMCID: PMC8226623 DOI: 10.3390/nano11061430] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/10/2021] [Accepted: 05/19/2021] [Indexed: 11/16/2022]
Abstract
Zinc oxide (ZnO) nanowires (NWs) are excellent candidates for the fabrication of energy harvesters, mechanical sensors, and piezotronic and piezophototronic devices. In order to integrate ZnO NWs into flexible devices, low-temperature fabrication methods are required that do not damage the plastic substrate. To date, the deposition of patterned ceramic thin films on flexible substrates is a difficult task to perform under vacuum-free conditions. Printing methods to deposit functional thin films offer many advantages, such as a low cost, low temperature, high throughput, and patterning at the same stage of deposition. Among printing techniques, gravure-based techniques are among the most attractive due to their ability to produce high quality results at high speeds and perform deposition over a large area. In this paper, we explore gravure printing as a cost-effective high-quality method to deposit thin ZnO seed layers on flexible polymer substrates. For the first time, we show that by following a chemical bath deposition (CBD) process, ZnO nanowires may be grown over gravure-printed ZnO nanoparticle seed layers. Piezo-response force microscopy (PFM) reveals the presence of a homogeneous distribution of Zn-polar domains in the NWs, and, by use of the data, the piezoelectric coefficient is estimated to be close to 4 pm/V. The overall results demonstrate that gravure printing is an appropriate method to deposit seed layers at a low temperature and to undertake the direct fabrication of flexible piezoelectric transducers that are based on ZnO nanowires. This work opens the possibility of manufacturing completely vacuum-free solution-based flexible piezoelectric devices.
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Affiliation(s)
- Andrés Jenaro Lopez Garcia
- University Grenoble Alpes, University Savoie Mont Blanc, CNRS, Grenoble INP, IMEP-LaHC, F-38000 Grenoble, France; (A.J.L.G.); (V.D.); (M.P.); (X.M.)
| | - Giuliano Sico
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Portici Research Centre, P.le E. Fermi 1, Portici, I-80055 Naples, Italy; (G.S.); (M.M.); (F.L.); (F.V.)
| | - Maria Montanino
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Portici Research Centre, P.le E. Fermi 1, Portici, I-80055 Naples, Italy; (G.S.); (M.M.); (F.L.); (F.V.)
| | - Viktor Defoor
- University Grenoble Alpes, University Savoie Mont Blanc, CNRS, Grenoble INP, IMEP-LaHC, F-38000 Grenoble, France; (A.J.L.G.); (V.D.); (M.P.); (X.M.)
| | - Manojit Pusty
- University Grenoble Alpes, University Savoie Mont Blanc, CNRS, Grenoble INP, IMEP-LaHC, F-38000 Grenoble, France; (A.J.L.G.); (V.D.); (M.P.); (X.M.)
| | - Xavier Mescot
- University Grenoble Alpes, University Savoie Mont Blanc, CNRS, Grenoble INP, IMEP-LaHC, F-38000 Grenoble, France; (A.J.L.G.); (V.D.); (M.P.); (X.M.)
| | - Fausta Loffredo
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Portici Research Centre, P.le E. Fermi 1, Portici, I-80055 Naples, Italy; (G.S.); (M.M.); (F.L.); (F.V.)
| | - Fulvia Villani
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Portici Research Centre, P.le E. Fermi 1, Portici, I-80055 Naples, Italy; (G.S.); (M.M.); (F.L.); (F.V.)
| | - Giuseppe Nenna
- ENEA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Portici Research Centre, P.le E. Fermi 1, Portici, I-80055 Naples, Italy; (G.S.); (M.M.); (F.L.); (F.V.)
- Correspondence: (G.N.); (G.A.); Tel.: +33-456-529-532 (G.A.)
| | - Gustavo Ardila
- University Grenoble Alpes, University Savoie Mont Blanc, CNRS, Grenoble INP, IMEP-LaHC, F-38000 Grenoble, France; (A.J.L.G.); (V.D.); (M.P.); (X.M.)
- Correspondence: (G.N.); (G.A.); Tel.: +33-456-529-532 (G.A.)
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Bandeira M, Chee BS, Frassini R, Nugent M, Giovanela M, Roesch-Ely M, Crespo JDS, Devine DM. Antimicrobial PAA/PAH Electrospun Fiber Containing Green Synthesized Zinc Oxide Nanoparticles for Wound Healing. MATERIALS 2021; 14:ma14112889. [PMID: 34072271 PMCID: PMC8198200 DOI: 10.3390/ma14112889] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/24/2021] [Accepted: 05/25/2021] [Indexed: 11/16/2022]
Abstract
Wound infections are the main complication when treating skin wounds. This work reports a novel antimicrobial material using green synthesized zinc oxide nanoparticles (ZnONPs) incorporated in polymeric fibers for wound healing purposes. ZnONPs are a promising antimicrobial nanomaterial with high activity against a range of microorganisms, including drug-resistant bacteria. The electrospun fibers were obtained using polyacrylic acid (PAA) and polyallylamine hydrochloride (PAH) and were loaded with ZnONPs green synthesized from Ilex paraguariensis leaves with a spherical shape and ~18 nm diameter size. The fibers were produced using the electrospinning technique and SEM images showed a uniform morphology with a diameter of ~230 nm. EDS analysis proved a consistent dispersion of Zn in the fiber mat, however, particle agglomerates with varying sizes were observed. FTIR spectra confirmed the interaction of PAA carboxylic groups with the amine of PAH molecules. Although ZnONPs presented higher antimicrobial activity against S. aureus than E. coli, resazurin viability assay revealed that the PAA/PAH/ZnONPs composite successfully inhibited both bacteria strains growth. Photomicrographs support these results where bacteria clusters were observed only in the control samples. The PAA/PAH/ZnONPs composite developed presents antimicrobial activity and mimics the extracellular matrix morphology of skin tissue, showing potential for wound healing treatments.
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Affiliation(s)
- Marina Bandeira
- Materials Research Institute, Athlone Institute of Technology, N37 HD68 Athlone, Ireland; (B.S.C.); (M.N.)
- Área do Conhecimento de Ciências Exatas e Engenharias, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil; (M.G.); (J.d.S.C.)
- Correspondence: (M.B.); (D.M.D.)
| | - Bor Shin Chee
- Materials Research Institute, Athlone Institute of Technology, N37 HD68 Athlone, Ireland; (B.S.C.); (M.N.)
| | - Rafaele Frassini
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil; (R.F.); (M.R.-E.)
| | - Michael Nugent
- Materials Research Institute, Athlone Institute of Technology, N37 HD68 Athlone, Ireland; (B.S.C.); (M.N.)
| | - Marcelo Giovanela
- Área do Conhecimento de Ciências Exatas e Engenharias, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil; (M.G.); (J.d.S.C.)
| | - Mariana Roesch-Ely
- Instituto de Biotecnologia, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil; (R.F.); (M.R.-E.)
| | - Janaina da Silva Crespo
- Área do Conhecimento de Ciências Exatas e Engenharias, Universidade de Caxias do Sul, Rua Francisco Getúlio Vargas, 1130, Caxias do Sul 95070-560, RS, Brazil; (M.G.); (J.d.S.C.)
| | - Declan M. Devine
- Materials Research Institute, Athlone Institute of Technology, N37 HD68 Athlone, Ireland; (B.S.C.); (M.N.)
- Correspondence: (M.B.); (D.M.D.)
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115
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Rutherford D, Jíra J, Kolářová K, Matolínová I, Mičová J, Remeš Z, Rezek B. Growth Inhibition of Gram-Positive and Gram-Negative Bacteria by Zinc Oxide Hedgehog Particles. Int J Nanomedicine 2021; 16:3541-3554. [PMID: 34079247 PMCID: PMC8163618 DOI: 10.2147/ijn.s300428] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 04/07/2021] [Indexed: 12/11/2022] Open
Abstract
Purpose Nanomaterials for antimicrobial applications have gained interest in recent years due to the increasing bacteria resistance to conventional antibiotics. Wound sterilization, water treatment and surface decontamination all avail from multifunctional materials that also possess excellent antibacterial properties, eg zinc oxide (ZnO). Here, we assess and compare the effects of synthesized hedgehog-like ZnO structures and commercial ZnO particles with and without mixing on the inactivation of bacteria on surfaces and in liquid environments. Methods Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria in microbial culture medium were added to reverse spin bioreactors that contained different concentrations of each ZnO type to enable dynamic mixing of the bacteria-ZnO suspensions. Optical density of the bacteria-ZnO suspensions was measured in real-time and the number of viable bacteria after 24 h exposure was determined using standard microbiological techniques. The concentration of zinc ion generated from ZnO dissolution in different liquid types was estimated from the dynamic interaction exposure. Static antibacterial tests without agitation in liquid media and on agar surface were performed for comparison. Results A correlation between increasing ZnO particle concentration and reduction in viable bacteria was not monotonous. The lowest concentration tested (10 µg/mL) even stimulated bacteria growth. The hedgehog ZnO was significantly more antibacterial than commercial ZnO particles at higher concentrations (up to 1000 µg/mL tested), more against E. coli than S. aureus. Minimum inhibitory concentration in microwell plates was correlated with those results. No inhibition was detected for any ZnO type deposited on agar surface. Zinc ion release was greatly suppressed in cultivation media. Scanning electron microscopy images revealed that ZnO needles can pierce membrane of bacteria whereas the commercial ZnO nanoparticles rather agglomerate on the cell surface. Conclusion The inhibition effects are thus mainly controlled by the interaction dynamics between bacteria and ZnO, where mixing greatly enhances antibacterial efficacy of all ZnO particles. The efficacy is modulated also by ZnO particle shapes, where hedgehog ZnO has superior effect, in particular at lower concentrations. However, at too low concentrations, ZnO can stimulate bacteria growth and must be thus used with caution.
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Affiliation(s)
- David Rutherford
- Faculty of Electrical Engineering, Czech Technical University, Prague, Czech Republic
| | - Jaroslav Jíra
- Faculty of Electrical Engineering, Czech Technical University, Prague, Czech Republic
| | - Kateřina Kolářová
- Author Affiliations Institute of Physics, Czech Academy of Sciences, Prague, Czech Republic
| | - Iva Matolínová
- Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic
| | - Júlia Mičová
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - Zdenek Remeš
- Author Affiliations Institute of Physics, Czech Academy of Sciences, Prague, Czech Republic
| | - Bohuslav Rezek
- Faculty of Electrical Engineering, Czech Technical University, Prague, Czech Republic
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116
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ZnO Nano-Rod Arrays Synthesized with Exposed {0001} Facets and the Investigation of Photocatalytic Activity. CRYSTALS 2021. [DOI: 10.3390/cryst11050522] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Zinc oxide (ZnO) possesses superior chemical and physical properties so that it can occupy an essential position in the application of nanostructures. In this paper, ZnO nano-rod arrays were synthesized by a simple one-step hydrothermal approach with the assistance of cetyl trimethyl ammonium bromide (CTAB). Exposure of the {0001} facets could be controlled by adjusting the amount of CTAB and the maximum exposure of the {0001} facets of ZnO nanorods is obtained at 1.2 g of CTAB. The photocurrent, EIS, and PL measurements support the facile charge transfer with minimum recombination of the photogenerated excitons of the ZnO nano-rod arrays obtained at 1.2 g of CTAB. Consequently, the obtained ZnO nano-rod arrays at the optimal CTAB of 1.2 g exhibit an excellent photocatalytic degradation rate of 99.7% for rhodamine B (RhB), while the degradation rate of RhB by the ZnO obtained without CTAB is only 35%.
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117
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High UV and Sunlight Photocatalytic Performance of Porous ZnO Nanostructures Synthesized by a Facile and Fast Microwave Hydrothermal Method. MATERIALS 2021; 14:ma14092385. [PMID: 34064309 PMCID: PMC8125317 DOI: 10.3390/ma14092385] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 04/29/2021] [Accepted: 05/01/2021] [Indexed: 01/15/2023]
Abstract
The degradation of organic pollutants in wastewaters assisted by oxide semiconductor nanostructures has been the focus of many research groups over the last decades, along with the synthesis of these nanomaterials by simple, eco-friendly, fast, and cost-effective processes. In this work, porous zinc oxide (ZnO) nanostructures were successfully synthesized via a microwave hydrothermal process. A layered zinc hydroxide carbonate (LZHC) precursor was obtained after 15 min of synthesis and submitted to different calcination temperatures to convert it into porous ZnO nanostructures. The influence of the calcination temperature (300, 500, and 700 °C) on the morphological, structural, and optical properties of the ZnO nanostructureswas investigated. All ZnO samples were tested as photocatalysts in the degradation of rhodamine B (RhB) under UV irradiation and natural sunlight. All samples showed enhanced photocatalytic activity under both light sources, with RhB being practically degraded within 60 min in both situations. The porous ZnO obtained at 700 °C showed the greatest photocatalytic activity due to its high crystallinity, with a degradation rate of 0.091 and 0.084 min-1 for UV light and sunlight, respectively. These results are a very important step towards the use of oxide semiconductors in the degradation of water pollutants mediated by natural sunlight.
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Socol M, Preda N. Hybrid Nanocomposite Thin Films for Photovoltaic Applications: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1117. [PMID: 33925952 PMCID: PMC8145415 DOI: 10.3390/nano11051117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 04/22/2021] [Accepted: 04/22/2021] [Indexed: 02/06/2023]
Abstract
Continuing growth in global energy consumption and the growing concerns regarding climate change and environmental pollution are the strongest drivers of renewable energy deployment. Solar energy is the most abundant and cleanest renewable energy source available. Nowadays, photovoltaic technologies can be regarded as viable pathways to provide sustainable energy generation, the achievement attained in designing nanomaterials with tunable properties and the progress made in the production processes having a major impact in their development. Solar cells involving hybrid nanocomposite layers have, lately, received extensive research attention due to the possibility to combine the advantages derived from the properties of both components: flexibility and processability from the organic part and stability and optoelectronics features from the inorganic part. Thus, this review provides a synopsis on hybrid solar cells developed in the last decade which involve composite layers deposited by spin-coating, the most used deposition method, and matrix-assisted pulsed laser evaporation, a relatively new deposition technique. The overview is focused on the hybrid nanocomposite films that can use conducting polymers and metal phthalocyanines as p-type materials, fullerene derivatives and non-fullerene compounds as n-type materials, and semiconductor nanostructures based on metal oxide, chalcogenides, and silicon. A survey regarding the influence of various factors on the hybrid solar cell efficiency is given in order to identify new strategies for enhancing the device performance in the upcoming years.
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119
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Tsuchida T, Fukushima J, Takizawa H. Decrease in the Crystallite Diameter of Solid Crystalline Magnetite around the Curie Temperature by Microwave Magnetic Fields Irradiation. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:984. [PMID: 33920397 PMCID: PMC8069712 DOI: 10.3390/nano11040984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/30/2021] [Accepted: 04/09/2021] [Indexed: 11/17/2022]
Abstract
A decrease in the crystallite diameter of ferrites irradiated with microwaves has been considered as a non-thermal effect of so-called de-crystallization; however, its mechanism has not been elucidated. We hypothesized that a decrease in the crystallite diameter is caused by interaction between the ordered spins of ferrite and the magnetic field of microwaves. To verify this, we focused on magnetite with a Curie temperature of 585 °C. Temperature dependence around this temperature and time dependence of the crystallite diameter of the magnetite irradiated with microwaves at different temperatures and durations were investigated. From the X-ray diffraction data, the crystallite diameter of magnetite exhibited a minimum value at 500 °C, just below the Curie temperature of magnetite, where the energy loss of the interaction between magnetite's spins and the microwaves takes the maximum value. The crystallite diameter exhibited a minimum value at 5 min irradiation time, during which the microwaves were excessively absorbed. Transmission electron microscopy observations showed that the microstructure of irradiated magnetite in this study was different from that reported previously, indicating that a decrease in the crystallite diameter is not caused by de-crystallization but its similar phenomenon. A decrease in coercivity and lowering temperature of Verwey transition were observed, evidencing decreased crystallite diameter. This study can thus contribute to the development of the theory of a non-thermal effect.
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Affiliation(s)
- Takayuki Tsuchida
- School of Engineering, Department of Applied Chemistry, Tohoku University, Sendai 980-8578, Japan; (J.F.); (H.T.)
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Antibacterial and Photocatalytic Properties of ZnO Nanoparticles Obtained from Chemical versus Saponaria officinalis Extract-Mediated Synthesis. Molecules 2021; 26:molecules26072072. [PMID: 33916520 PMCID: PMC8038507 DOI: 10.3390/molecules26072072] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 03/31/2021] [Accepted: 04/02/2021] [Indexed: 01/30/2023] Open
Abstract
In the present work, the properties of ZnO nanoparticles obtained using an eco-friendly synthesis (biomediated methods in microwave irradiation) were studied. Saponaria officinalis extracts were used as both reducing and capping agents in the green nanochemistry synthesis of ZnO. Inorganic zinc oxide nanopowders were successfully prepared by a modified hydrothermal method and plant extract-mediated method. The influence of microwave irradiation was studied in both cases. The size, composition, crystallinity and morphology of inorganic nanoparticles (NPs) were investigated using dynamic light scattering (DLS), powder X-ray diffraction (XRD), SEM-EDX microscopy. Tunings of the nanochemistry reaction conditions (Zn precursor, structuring agent), ZnO NPs with various shapes were obtained, from quasi-spherical to flower-like. The optical properties and photocatalytic activity (degradation of methylene blue as model compound) were also investigated. ZnO nanopowders' antibacterial activity was tested against Gram-positive and Gram-negative bacterial strains to evidence the influence of the vegetal extract-mediated synthesis on the biological activity.
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Lim H, Yusuf M, Song S, Park S, Park KH. Efficient photocatalytic degradation of dyes using photo-deposited Ag nanoparticles on ZnO structures: simple morphological control of ZnO. RSC Adv 2021; 11:8709-8717. [PMID: 35423379 PMCID: PMC8695276 DOI: 10.1039/d0ra10945b] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/05/2021] [Indexed: 12/19/2022] Open
Abstract
In this work, morphology-controlled ZnO structures were prepared via a hydrothermal method by simple adjustments in the NaOH concentration. The NaOH concentration variation from 0.2 to 1.2 M resulted in the formation of ZnO structures in shapes such as walnut, spherical flower, flower, rod, and urchin-like. The extent of OH- ions is the main factor influencing the growth of ZnO structures. Well-defined morphologies, good crystallinity, and optical properties were obtained for all ZnO structures. Among these ZnO structures, ZnOsf (spherical flower-like) structure showed a greater percentage of photodegradation of methyl orange and rhodamine B dyes. Surface plasmon resonance was achieved by modifying the surface of ZnO with Ag nanoparticles. ZnOsf was loaded with Ag nanoparticles by a facile photo-deposition method. Ag-ZnOsf showed superior photoactivity and recyclability for the degradation of methyl orange and rhodamine B. Therefore, modification of different ZnO structures can help realize potential catalysts for future environmental applications.
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Affiliation(s)
- Hyeonhan Lim
- Department of Chemistry, Chemistry Institute for Functional Materials, Pusan National University Busan 46241 Republic of Korea
| | - Mohammad Yusuf
- Department of Chemistry, Chemistry Institute for Functional Materials, Pusan National University Busan 46241 Republic of Korea
| | - Sehwan Song
- Department of Physics, Pusan National University Busan 46241 Republic of Korea
| | - Sungkyun Park
- Department of Physics, Pusan National University Busan 46241 Republic of Korea
| | - Kang Hyun Park
- Department of Chemistry, Chemistry Institute for Functional Materials, Pusan National University Busan 46241 Republic of Korea
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A Simple Ball Milling and Thermal Oxidation Method for Synthesis of ZnO Nanowires Decorated with Cubic ZnO 2 Nanoparticles. NANOMATERIALS 2021; 11:nano11020475. [PMID: 33668447 PMCID: PMC7918776 DOI: 10.3390/nano11020475] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 01/30/2021] [Accepted: 02/05/2021] [Indexed: 11/17/2022]
Abstract
In this work, we propose the synthesis of ZnO nanostructures through the thermal oxidation of ball-milled powders with the introduction of Mg and Sn doping species at the preliminary step of milling. We investigate the advantages and challenges of this two steps process for the production and fabrication of highly crystalline ZnO nanowires. This simple method allows us to fabricate ZnO nanowires with a higher quality core crystal at a much lower temperature and for a shorter processing time than the state-of-the-art, and decorated with by ZnO2 nanoparticles as determined via TEM analysis. The main findings will show that the crystalline core of the nanowires is of hexagonal ZnO while the nanoparticles on the surface are ZnO2 cubic type. Generally, the method proves to be suitable for applications that require a high surface-to-volume ratio, for example, catalysis phenomena, in which the presence of zinc oxides species can play an important role.
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Talodthaisong C, Plaeyao K, Mongseetong C, Boonta W, Srichaiyapol O, Patramanon R, Kayunkid N, Kulchat S. The Decoration of ZnO Nanoparticles by Gamma Aminobutyric Acid, Curcumin Derivative and Silver Nanoparticles: Synthesis, Characterization and Antibacterial Evaluation. NANOMATERIALS 2021; 11:nano11020442. [PMID: 33572431 PMCID: PMC7916182 DOI: 10.3390/nano11020442] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 01/23/2021] [Accepted: 02/06/2021] [Indexed: 11/16/2022]
Abstract
Zinc oxide nanoparticles (ZnO NPs) are applied in various applications in catalysis, biosensing, imaging, and as antibacterial agents. Here we to prepare ZnO nanomaterials decorated by γ-amino butyric acid (GABA), curcumin derivatives (CurBF2) and silver nanoparticles (CurBF2-AgNPs). The structures of all ZnO nanostructures were characterized using Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), UV-VIS spectrophotometry, fluorescence spectrophotometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HR-TEM). Further, their antibacterial activities against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria were investigated through analysis of minimum inhibitory concentration (MIC) method. Among the prepared nanostructures, the ZnO NPs-GABA/CurBF2-AgNPs showed excellent antibacterial activity against both Gram-positive and -negative bacteria. ZnO NPs fabricated here may have potential use in future anti-bacterial compositions and coatings technologies.
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Affiliation(s)
- Chanon Talodthaisong
- Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (C.T.); (K.P.); (C.M.); (W.B.)
| | - Kittiya Plaeyao
- Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (C.T.); (K.P.); (C.M.); (W.B.)
| | - Chatariga Mongseetong
- Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (C.T.); (K.P.); (C.M.); (W.B.)
| | - Wissuta Boonta
- Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (C.T.); (K.P.); (C.M.); (W.B.)
| | - Oranee Srichaiyapol
- Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (O.S.); (R.P.)
| | - Rina Patramanon
- Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (O.S.); (R.P.)
| | - Navaphun Kayunkid
- College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520, Thailand;
| | - Sirinan Kulchat
- Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand; (C.T.); (K.P.); (C.M.); (W.B.)
- Correspondence:
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Abd-Elsalam KA. Zinc-based nanostructures for sustainable applications in agroecology: A note from the editor. ZINC-BASED NANOSTRUCTURES FOR ENVIRONMENTAL AND AGRICULTURAL APPLICATIONS 2021:1-10. [DOI: 10.1016/b978-0-12-822836-4.00010-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Synthesis, Characterization, and Photocatalytic Performance of ZnO–Graphene Nanocomposites: A Review. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs5010004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
ZnO is an exciting material for photocatalysis applications due to its high activity, easy accessibility of raw materials, low production costs, and nontoxic. Several ZnO nano and microstructures can be obtained, such as nanoparticles, nanorods, micro flowers, microspheres, among others, depending on the preparation method and conditions. ZnO is a wide bandgap semiconductor presenting massive recombination of the generated charge carriers, limiting its photocatalytic efficiency and stability. It is common to mix it with metal, metal oxide, sulfides, polymers, and nanocarbon-based materials to improve its photocatalytic behavior. Therefore, ZnO–nanocarbon composites formation has been a viable alternative that leads to new, more active, and stable photocatalytic systems. Mainly, graphene is a well-known two-dimensional material, which could be an excellent candidate to hybridize with ZnO due to its excellent physical and chemical properties (e.g., high specific surface area, optical transmittance, and thermal conductivity, among others). This review analyses ZnO–graphene nanocomposites’ recent advances, addressing the synthesis methods and the resulting structural, morphological, optical, and electronic properties. Moreover, we examine the ZnO–graphene composites’ role in the photocatalytic degradation of organic/inorganic pollutants.
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Preparation and Characterisation of Poly(methyl metacrylate)-Titanium Dioxide Nanocomposites for Denture Bases. Polymers (Basel) 2020; 12:polym12112655. [PMID: 33187176 PMCID: PMC7697001 DOI: 10.3390/polym12112655] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/01/2020] [Accepted: 11/05/2020] [Indexed: 12/17/2022] Open
Abstract
Introduction of titanium dioxide nanoparticles (TiO2 NPs) to poly(methyl methacrylate) (PMMA) aims to improve the mechanical, microbiological and tribological properties of dental prosthesis bases. The aim of the research was to assess the polymerisation time and the change in the colour of the new biomaterial. Samples with the 1 wt% and 2 wt% content of TiO2 additionally modified by ultrasounds were created. The effectiveness of ultrasounds was assessed by comparing the average size of conglomerates in a liquid acrylic resin monomer by means of a dynamic light scattering (DLS) analysis. The biomaterial structure was assessed by the energy-dispersive X-ray spectroscopy (EDS) analysis. The colour change was analysed by means of a colorimetric test and provided in the CIE (Commission internationale de l’éclairage) L*a*b* and RGB (Red Green Blue) colour palette. It was observed during the DLS test that the ultrasonic homogenisation process caused an increase in the suspension heterogeneity. The EDS analysis confirmed the presence of nanoparticles sized below 100 nm, which constitutes a ground for calling the new biomaterial a nanocomposite. The addition of TiO2 NPs as well as the ultrasounds result in the reduction of the average PMMA polymerisation time. The obtained data reveal that the addition of both 1 wt% and 2 wt% causes a considerable change in the PMMA colour: its whitening. To summarise, the reduced polymerisation time of the new biomaterial fully enables performance of standard procedures related to creation of dental prosthesis bases. Due to the considerable change in the colour, the clinical application is limited to performance of repairs or relining of the prosthesis, where the new material is located in an unaesthetic zone.
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Virgen-Ortiz A, Apolinar-Iribe A, Díaz-Reval I, Parra-Delgado H, Limón-Miranda S, Sánchez-Pastor EA, Castro-Sánchez L, Jesús Castillo S, Dagnino-Acosta A, Bonales-Alatorre E, Rodríguez-Hernández A. Zinc Oxide Nanoparticles Induce an Adverse Effect on Blood Glucose Levels Depending On the Dose and Route of Administration in Healthy and Diabetic Rats. NANOMATERIALS 2020; 10:nano10102005. [PMID: 33053624 PMCID: PMC7599450 DOI: 10.3390/nano10102005] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 10/02/2020] [Accepted: 10/04/2020] [Indexed: 12/12/2022]
Abstract
Different studies in experimental diabetes models suggest that zinc oxide nanoparticles (ZnONPs) are useful as antidiabetic agents. However, this evidence was performed and measured in long-term treatments and with repeated doses of ZnONPs. This work aimed to evaluate the ZnONPs acute effects on glycemia during the next six h after an oral or intraperitoneal administration of the treatment in healthy and diabetic rats. In this study, the streptozotocin-nicotinamide intraperitoneal administration in male Wistar rats were used as a diabetes model. 10 mg/kg ZnONPs did not modify the baseline glucose in any group. Nevertheless, the ZnONPs short-term administration (100 mg/kg) induced a hyperglycemic response in a dose and route-dependent administration in healthy (130 ± 2 and 165 ± 10 mg/dL with oral and intraperitoneal, respectively) and diabetic rats (155 ± 2 and 240 ± 20 mg/dL with oral, and intraperitoneal, respectively). The diabetic rats were 1.5 fold more sensitive to ZnONPs effect by the intraperitoneal route. In conclusion, this study provides new information about the acute response of ZnONPs on fasting glycemia in diabetic and healthy rat models; these data are essential for possible future clinical approaches.
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Affiliation(s)
- Adolfo Virgen-Ortiz
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, Colima C.P. 28045, Mexico; (I.D.-R.); (E.A.S.-P.); (E.B.-A.)
- Correspondence:
| | - Alejandro Apolinar-Iribe
- Departamento de Física, Universidad de Sonora, A.P. 1626, Hermosillo, Sonora C.P. 83000, Mexico;
| | - Irene Díaz-Reval
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, Colima C.P. 28045, Mexico; (I.D.-R.); (E.A.S.-P.); (E.B.-A.)
| | - Hortensia Parra-Delgado
- Facultad de Ciencias Químicas, Universidad de Colima, Coquimatlán, Colima C.P. 28400, Mexico;
| | - Saraí Limón-Miranda
- Departamento de Ciencias Químico Biológicas y Agropecuarias, URS, Universidad de Sonora, Navojoa, Sonora C.P. 85880, Mexico;
| | - Enrique Alejandro Sánchez-Pastor
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, Colima C.P. 28045, Mexico; (I.D.-R.); (E.A.S.-P.); (E.B.-A.)
| | - Luis Castro-Sánchez
- Centro Universitario de Investigaciones Biomédicas, CONACYT-Universidad de Colima, Universidad de Colima, Colima C.P. 28045, Mexico; (L.C.-S.); (A.D.-A.)
| | - Santos Jesús Castillo
- Departamento de Investigación en Física, A.P. 5-088, Hermosillo, Sonora C.P. 83000, Mexico;
| | - Adan Dagnino-Acosta
- Centro Universitario de Investigaciones Biomédicas, CONACYT-Universidad de Colima, Universidad de Colima, Colima C.P. 28045, Mexico; (L.C.-S.); (A.D.-A.)
| | - Edgar Bonales-Alatorre
- Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, Colima C.P. 28045, Mexico; (I.D.-R.); (E.A.S.-P.); (E.B.-A.)
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Tymoszuk A, Wojnarowicz J. Zinc Oxide and Zinc Oxide Nanoparticles Impact on In Vitro Germination and Seedling Growth in Allium cepa L. MATERIALS 2020; 13:ma13122784. [PMID: 32575606 PMCID: PMC7344999 DOI: 10.3390/ma13122784] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/12/2020] [Accepted: 06/17/2020] [Indexed: 11/16/2022]
Abstract
Zinc oxide nanoparticles (ZnO NPs) are ones of the most commonly manufactured nanomaterials worldwide. They can be used as a zinc fertilizer in agriculture to enhance yielding and to control the occurrence of diseases thanks to its broad antifungal and antibacterial action. The aim of this study was to investigate and compare the effects of ZnO submicron particles (ZnO SMPs) and ZnO NPs on the process of in vitro seed germination and seedling growth in onion (Allium cepa L. 'Sochaczewska'), and to indicate the potential use of these compounds in onion production. In the experiment, disinfected seeds were inoculated on the modified Murashige and Skoog (MS) medium and poured with ZnO SMP or ZnO NP water suspension, at the concentrations of 50, 100, 200, 400, 800, 1600, and 3200 mg∙L-1. During three successive weeks, the germinating seeds were counted. Germination started most often on the second or third day of in vitro culture. The highest share of germination was recorded for seeds treated with 800 mg∙L-1 ZnO SMPs and ZnO NPs (52% and 56%, respectively). After the application of ZnO SMPs and ZnO NPs at the highest tested concentration (3200 mg∙L-1), the share of germinating seeds was only 19% and 11%, respectively. Interestingly, seedlings obtained from control seeds and seeds treated with ZnO SMPs and ZnO NPs did not differ statistically in terms of length, fresh weight, and dry weight of leaves, and roots. Both ZnO SMPs and ZnO NPs, in the concentration range from 50 to 1600 mg∙L-1, can be used to stimulate the germination process of onion seeds, without negative effects on the further growth and development of seedlings. There were no differences found between the action of ZnO NPs and ZnO SMPs, which suggested that the most important factor influencing seed germination was in fact the concentration of zinc ions, not the particle size.
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Affiliation(s)
- Alicja Tymoszuk
- Laboratory of Ornamental Plants and Vegetable Crops, Faculty of Agriculture and Biotechnology, UTP University of Science and Technology in Bydgoszcz, 6 Bernardyńska St., PL-85-029 Bydgoszcz, Poland
- Correspondence: (A.T.); (J.W.); Tel.: +48-52374-95-64 (A.T.); +48-22-876-04-29 (J.W.)
| | - Jacek Wojnarowicz
- Laboratory of Nanostructures, Institute of High Pressure Physics, Polish Academy of Science, 29/37 Sokolowska St., PL-01-142 Warsaw, Poland
- Correspondence: (A.T.); (J.W.); Tel.: +48-52374-95-64 (A.T.); +48-22-876-04-29 (J.W.)
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